baber/WOPTO huggingface dataset:
Patent DE-4108576-A1 (DE)
Title: Exposure process for structurising wafer with highly accurate control - by exposing position error mark in each field and correction before exposing circuit
Inventor: PFORR RAINER DR
IPC: G03F9/00
Filed: 1991-03-14
Abstract: Exposure process for transferring structures from a pattern contg. a circuit structure to a semiconductor wafer coated with a resist system and image field array, esp. in the prodn. of micro- or optoelectronic devices, uses a substrate table with highly accurate control in the planar co-ordinates x, y and psi; an opto-electronic alignment system, with measuring system(s) and regulating units, for aligning substrate marks and determining their substrate table co-ordinates; a projection system with light source and projection objective; and a l:x projection alignment and exposure device (PAE), pref. regulating the imaging scale for raising and lowering the substrate table. The resist-coated wafer is placed on the substrate table, the pattern is aligned with the marks on the wafer and the circuit structure is transferred by exposure with light of the required wavelength. After roughly aligning the wafer on the table by the alignment marks, the position is measured and the substrate co-ordinate system is ascertained, then the structure is transferred by carrying out a series of operations for each individual image field gp., involving: (a) entering the co-ordinates of at least one image field of an nth gp. in the series; (b) exposing the pattern region with position error measuring structures (PEMS), other measuring structures and alignment marks in at least 2 corners, with the circuit structure masked, so that the PEMS lie in the plane of the wafer, using light (La) of wavelength alpha to modify the reflectivity of the exposed areas by changing the deg. of absorption of the light (Lb) of wavelength beta used for measuring position errors; (c) entering the exposed PEMS in the input of the opto-electronic measuring system and measuring the position difference of the PEMS to the top-coat measuring structures produced on the wafer and/or in the resist system by structurisation and/or exposure with Lb, which does not alter the characteristics of the resist system; (d) determining the correction value for the x, y and psi co-ordinates giving min. position error, using a computer or the PAE; (e) entering the image field of the nth gp., with corrected values for the horizontal and vertical adjustments; and (f) exposing the circuit structure with La, the areas already exposed being masked. ADVANTAGE - The process gives optimum quality with very accurate exposed resist structures at low cost and high efficiency.
Patent DE-4113309-A1 (DE)
Title: Novel fluoro-alkenyl fluoro-benzene cpds. - useful as components of liq. crystal media for displays etc.
Inventor: PAULUTH DETLEF DR
IPC: C09K19/30
Filed: 1991-04-24
Abstract: Fluoro-alkenyl fluorobenzene derivs of formula (I) are new. In (I) n = 0-10; A1 and A2 = (a) trans-1,4-cyclohexylene opt. with one or more non-neighbouring -CH2- replaced by -O- and/or -S-; (b) 1,4-phenylene opt. with 1 or 2 CH gps. replaced by N; or (c) 1,4-cyclohexenylene, 1,4-bicyclo(Z,Z,2)-octylene, piperidin-1,4-diyl, naphthalen-2,6-diyl,decahydronaphthalen -2,6-diyl or 1,2,3,4-tetrahydronaphthalen 2,6-diyl, where (a) and (b) can be substd. by CN or F; Z1 and Z2 = a single bond, -CO.O-, -O.CO-, -CH2.O-, -O.CH2-, -CH2.CH2-, -CH=CH-, -C=C- or one of them can also be -(CH2)4- or -CH=CH.CH2.CH2-; L = H or F; m = 0, 1 or 2; Y = F or Cl; and Q = a single bond, -CF2-, -OCF2- or -O.CHF-, with the proviso that L = F when Q.Y = F, m = O, A2 = trans-1,4-cyclohexylene or 1,4-phenylene and at the same time Z2 = a single bond or -CH2.CH2-. USE/ADVANTAGE - The use of (I) is claimed as a component in liq. crystal mixts. for electro-optical devices such as displays, (I) being of low viscosity and giving mixts. with wide mesophase range with good low temp. properties such as optical and dielectric anisotropy.
Patent DE-4114064-A1 (DE)
Title: Melt spinning head with exchangeable packs - has alternative connecting pieces for different numbers of spinnerets
Inventor: LENK ERICH DR
IPC: D01D4/08
Filed: 1991-04-30
Abstract: A melt spinning head has a distribution block with polymer feed channels ending in several outlets. Connecting pieces and spinning packs are of two kinds. In one kind there are several channels leading to individual spinneret feed chambers while in the other kind the connecting piece has several channels which all lead to a single spinneret feed chamber. Each spinneret feed chamber can have a sealing piston with an axial bore which meets the appropriate feed channel. USE/ADVANTAGE - The spinning head can be adapted for different types of yarn by changing only a few components.
Patent DE-4116179-A1 (DE)
Inventor: DEMHARTER MANFRED
IPC: B01D57/02
Filed: 1991-05-17
Abstract: The invention concerns an electrophoresis chamber constructed from a multiplicity of cooled elements.
Patent DE-4117403-A1 (DE)
Inventor: HARBACH WALTER
IPC: E06B3/10
Filed: 1991-05-28
Abstract: A laminated wooden section member (5) for making frames or casements (11) in the manufacture of windows, doors or the like consists of a number of lamellae (2) which in each case have a rectangular cross-section and the mutually facing surfaces of which are interconnected via a bonding and the surface of which extending approximately perpendicularly to the bonded surfaces is finished dimensionally accurately by milling. The lamellae (2) consist of strips of isocyanate-bonded medium-density fibre panels (1) (MDF panels). <IMAGE>
Patent DE-4119190-A1 (DE)
Title: Design formula thin-walled cylinders under external pressure - is applicable for all cylinders irrespective of ratio of dia. to length
Inventor: MEINCKE HERMANN
IPC: F16L9/00
Filed: 1991-06-11
Abstract: The formulae for calculating the safe external pressure which may be imposed on a thin walled cylinder without causing it to collapse, involve the cosine of an angle alpha, where alpha depends on the ratio of the dia. of the cylinder to its length. When alpha is greater than 90 deg. the value of its cosine becomes negative so that different formulae have to be used depending on whether alpha is less than, or geater than, 90 deg. The new formula avoids the use of the angle alpha and can be used for cylinders with the ratio D/1 which is less than or greater than unity. USE/ADVANTAGE - Design of thin walled cylinders subjected to external pressure. The formula is simpler than formulae at present in use.
Patent DE-4119718-A1 (DE)
Title: Portable sewage treatment assembly - has pre-flotation section and two=stage treatment section with aerobic and anaerobic biological actions
Inventor: SONNENREIN UWE
IPC: C02F3/12
Filed: 1991-06-14
Abstract: The sewage, contg. solids and biodegradable materials, is treated by sepn. of the solids and by flotation, where the physical stages separate coarse and fine matter and heavy matter. The preflotation stage has a gas/water mixer (32) and an initial separator for solids and foam. The two-stage treatment sections (44,54) have a gas/water mixer (48) and a further solids and foam separator. The final flotation stage has a further gas/water mixer and a solids and foam separator. The sewage flow through the treatment stages is set by a process control computer according to readings from sensors to show the condition and cleanliness of the sewage. The sewage is pref. processed by flotation in an aerobic biological treatment stage (44) and in a following anaerobic biological treatment stage (54), and is recirculated a number of times between the two stages by pumping, with an active oxygen/water mixer at least at the aerobic biological stage. ADVANTAGE - The system can be transported to sites where needed, in a compact assembly, with an overall process control.
Patent DE-4125049-A1 (DE)
Title: Computer mouse with dual function operating keys - used for direct control of path-pixel ratio
Inventor: HENNIG REIMOND
IPC: G06F3/0354
Filed: 1991-07-29
Abstract: The computer mouse incorporates a number of operating keys which have three different switch stages for providing a dual functionality, allowing controlled variation of the path/pixel ratio during use. The path/pixel ratio for a dynamic mouse used for computer-assisted design is matched to the displacement characteristics. Each operating key can be moved from its rest position into a semi-depressed and a fully-depressed position. ADVANTAGE - Rapid, light and accurate positioning of cursor.
Patent DE-4127351-A1 (DE)
Title: Building surface seal - has a silicon alkali base coat covered by an intermediate layer of mineral cement sludge with plastics modification
Inventor: HEISING WOLFGANG
IPC: E02D31/00
Filed: 1991-08-19
Abstract: To seal porous building surfaces, against rising damp, and other water effects, a silicon alkali base coat is applied, in a watery form, followed by an intermediate layer of mineral cement as a flexible sealing sludge, in a mineral cement coating with plastics modification. Pref. the silicon alkali base coat is applied to the surface while wet. The mineral cement intermediate layer, as a sealing sludge, is applied over the base coat. The whole sealing has a thickness of 2-5 mm, with individual layer thicknesses each of about 1 mm. The mineral cement coating has an acryl polymerisate, as a dispersion for the plastics modification. The materials bond together at relatively low temps. of about 5 deg.C, and the final layer is proof against rain after about 30 mins. ADVANTAGE - The method gives an effective seal with cost savings on material and time, and saves protective layers.
Patent DE-4128172-A1 (DE)
Title: Digital hearing aid with microcomputer - uses acoustic sensor to pick up oto-acoustic reaction of inner ear to tones measured by electro-acoustic transducer
Inventor: KOEPKE WOLFGANG DIPL ING
IPC: H04R25/00
Filed: 1991-08-24
Abstract: In addition to the acoustic sensor and a digital signal processing microcomputer, the hearing aid contains an electro-acoustic transducer and a correction device for sequential generation of measuring tones. In dependence on the objective reaction of the user as compared with a stored hearing standard, a correction of the respective transmission data is carried out. The acoustic sensor (11) of the hearing aid (10) picks up the oto-acoustic reaction of the user's inner ear (25) to the measuring tones from the transducer (16). According to the respective sensor voltage, the microcomputer (13) carries out the comparison and correction. ADVANTAGE - Objective testing of hearing vol. and adaptation of transmit function.
Patent DE-4128972-A1 (DE)
Title: Radio appts. for portable satellite communication system - has briefcase-type base housing containing radio equipment and compass, connected by stay for angular alignment to lid with planar aerial array
Inventor: UHLMANN MANFRED DIPL ING
IPC: H04B1/38
Filed: 1991-08-31
Abstract: The housing for the portable satellite communication transceiver is shaped as a briefcase. The lid (11) and base (10) are connected by a full length hinge and also by a stay (12) carrying markings, so that the angle of slope of the lid can be accurately regulated. Incorporated on the surface of the lid is a planar aerial array (14) and housed in the base is the radio equipment (16, 18) and a section (13) with a compass. The markings on the stay correspond to an angle between 30 and 70 degrees, preferably between 40 and 60 degrees. Instead of the single stay, an alternative stay arrangement may be used. The radiation pattern of the aerial is specified. USE/ADVANTAGE - E.g. for transcontinental satellite communication between mobile or stationary units connected to respective telephone networks; ship or land freight navigation. Easy directional alignment with satellite.
Patent DE-4132091-A1 (DE)
Title: Iron@-magnesium@ composite casting - useful as sacrificial anode
Inventor: HOESSLE LUDWIG
IPC: B22D19/00
Filed: 1991-09-23
Abstract: An Fe-Mg composite workpiece is made by heating an iron body to red heat, heating a casting mould to above three-fifths of the iron body temp. and casting an Al contg. Mg alloy with 10-15% superheating above the liquidus into the casting mould. Also claimed is a composite casting in which an Fe core (11) is (partially) incorporated in a cast Mg body (12), the projecting portion (13) of the core (11) being Ni plated. USE/ADVANTAGE - The composite workpiece may be a sacrificial anode fro use in hot water producers, heating equipment and the like. Substitution reactions between the Fe atoms and Al atoms provide intimate bonding between the Fe core and the surrounding sacrificial metal.
Patent DE-4136076-A1 (DE)
Title: Alternate hot or cold-working and heat treatment of metal alloy - to produce mould material for continuous casting process having improved physical strength without significant redn. in thermal conductivity
IPC: C22F1/08
Filed: 1991-10-30
Abstract: Mfr. of mould material for continuous casting comprises (i) prepn. of age-hardening casting mould material; (ii) hot-working of the mould material by rolling; (iii) heat treatment of the rolled material to form a solid soln., (iv) hot or cold-working of the solid soln. by rolling, (v) heat treatment of the processed material until it is age-hardened, and (vi) hot or cold-working of the hardened material by rolling. Pref. following heat treatment of rolled material at 900-1000 deg.C to form a solid soln., the processing rate is such that the cross-sectional area of the material is reduced by in the order of 2-50%. The last two process steps (v and vi) are repeated at least once. ADVANTAGE - Improved physical strength without significant redn. in thermal conductivity.
Patent DE-4138429-A1 (DE)
Inventor: BOEHMKE UWE
IPC: C10L1/195
Filed: 1991-11-22
Abstract: The invention relates to a process for making compositions with improved low-temperature behaviour for use as motor fuels or lubricants, starting from the esters of long-chain fatty acids obtained from natural sources with monohydric C1-C6-alcohols (FAE),   a) additives PPD, known per se and used for improving the low-temperature behaviour of mineral oils, being added in quantities from 0.0001 to 0.1 % by weight, relative to the long-chain fatty acid esters FAE, and b) the mixture being cooled to a temperature below the cold filter plugging point (determined according to DIN 51 458) of the long-chain fatty acid esters FAE without additives, and   c) the resulting precipitates (FAN) being separated off. s
Patent DE-4201332-A1 (DE)
Title: Prodn. of barrel end with efficient seal for its pipe connection - by suitably making e.g. shoulder in wall of pipe so that it firmly engages corresp. rim of hole in barrel end sheet
Inventor: SCHMIDT WOLFGANG
IPC: B29C65/02
Filed: 1992-01-20
Abstract: A barrel end is produced by making at least one hole in a basic-sheet and fitting a suitable short pipe in the hole for taking an end cover. The basic sheet is fitted on both inner and outer faces with locking features which position the plastic pipe at the hole area. The pipe is pref. made of high mechanical strength acid-resistant plastics. The figure shows the flat sheet barrel end (1) with the hole in which the pipe (2) is fitted. The end sheet (4) has outer (5) and inner (6) faces. To fix the pipe (2) in position the sheet (4) has projections (7,8) by the hole (2) and surrounded by the side (9) on the pipe (2). The pipe (2) thus has an upper outer part (10) and a lower pt. (11). The inner face (6) of the sheet (4) can have a step to match a corresp. pt. of the pipe wall (2) to form a flush joint. A further improvement in the grip of the pipe can be produced e.g. by having a double flange on the pipe which engages the sheet (4). Various other alternative constructions can be used to stiffen the mounting of the pipe (2). ADVANTAGE - The method produces an effective seal and simplifies cleaning.
Patent DE-4202522-A1 (DE)
Title: Telescopic boom and head piece - has front shaft to hold main tubes, which is removably held in the head section
Inventor: MARKER HANNES
IPC: B63B35/79
Filed: 1992-01-30
Abstract: The telescopic boom has two front main tubes, which are held pivoted in the head piece via a front shaft, which is at right angles to the longitudinal boom axis. The telescopic rear tubes each carry an end section. The front shaft (2) is removably fastened on/in the head section (5). The front shaft is formed one-piece with the main tubes. It may be divided, and each shaft section is integral with the associated main tube. The two shaft sections are connected so as to be non-turnable, or relatively turnable. USE/ADVANTAGE  - Quicker, easier replacement of main front tubes for telescopic boom and head piece.
Patent DE-4203444-A1 (DE)
Title: Digital electronic circuit for addition and subtraction - has shift registers for entry of inputs from keyboard via serial line
Inventor: MERKLE PAUL
IPC: G06F7/491
Filed: 1992-02-06
Abstract: A digital electronic circuit is used for the addition and subtraction of decimal numbers that are entered into and processed in 5211 code form. The circuit has two shift registers (12) that receive the input numbers in an incrementing process using a control circuit (20) with a decimal keyboard. The adder/subtractor circuit may be switched between the two operating modes using the signals generated by a control circuit. Outputs from the arithmetic stages are converted and entered into a shift register. ADVANTAGE - Simplified circuit arrangement.
Patent DE-4204020-A1 (DE)
Title: Power supply system for gas discharge tubes, e.g. for neon signs - employs semiconductor control and medium frequency inverter enabling use of small display-mounted transformers and monitor circuit
Inventor: FLOR ALBERT
IPC: H05B41/282
Filed: 1992-02-12
Abstract: A power supply unit for gas discharge lamps, e.g. neon tubes for illuminated signs, has an AC mains unit (1) and an individual sign-mounted transformer (3) for each neon tube (5). The mains unit (1) incorporates a Triac point-on wave current regulator (6) and rectifier (8) controlled by an element (7) of the electronic controller (4) and the DC output is inverted by H-connected MOSFET's in the inverter (2) timed by the 400/500 Hz oscillator (16). The transformer tertiary windings (18), rectifier (19) and monitor unit (20) serve to switch off the complete installation via the regulator (6) in the event of failure of any neon tube. USE/ADVANTAGE - Radiates min. interference to surroundings. Medium frequency inverter system enables efficient HV generation by small easily mounted and directly connected transformers requiring no intermediate circuitry. Semiconductor circuitry is low-cost, energy-saving and not prone to failure.
Patent DE-4205766-A1 (DE)
Title: Automatic blood pressure measuring system - has regulator for pressure sleeve used for oscillometric method and measuring arrangement receiving pulses of pulse wave generated by artery
Inventor: AUNG YE
IPC: A61B5/022
Filed: 1992-02-25
Abstract: The blood pressure is measured by evaluation of a pulse wave produced by an arterial blood vessel of the patient in synchronism with the heart beat. A pressure sleeve (10) and source (18) are used to exert pressure on the arterial blood vessel. A switching valve (16) and a control unit (28) regulate the pressure force exerted. The control unit also serves as a measuring section and control the pressure force exerted to a first rated value. It receives the pulses produced by the blood vessel for evaluation. A detector (34) lies distal to the pressure sleeve from the pespective o f the patient's heart. The control unit includes a microprocessor that comprises a c.p.u., a ROM, a RAM and an I-O unit. ADVANTAGE - Recognises insufficiency of stipulated value and remedies it before blood pressure measurement takes place, thus reducing time taken.
Patent DE-4213462-A1 (DE)
Title: Fully automatic equipment for printing, testing and splitting up paper web - uses microprocessor as control unit delivering information set in parameter block as well as transition of pulse track derived, e.g. from perforations, margin.
Inventor: THIEL MICHAEL
IPC: B41F19/00
Filed: 1992-04-24
Abstract: By means of characters and synchronisation, the continuous strip of clear or punched paper strip can be printed at desired sections with information required in a single pass, selectively on the top or underneath side. In the case of perforated continuous strip it is ensured that only the non-punched, horizontal and vertical areas are printed. The sum of the spacing between the punched holes as well as the widths of the holes and margins are tested for regularity. The equipment can be controlled by the continuous web to be printed. ADVANTAGE - Copes with paper of various widths and allows section to be printed to be selected. Allows batches to be selected, cut, separated and wound.
Patent DE-4214544-A1 (DE)
Title: Closure and filling valve esp. for pressure bottle - has closure piston preventing back-filling esp.  with contaminated refrigerant
Inventor: OELKERS DIETER
IPC: F17C5/06
Filed: 1992-04-29
Abstract: A closure and filling valve for pressurised containers, esp. refrigerant bottles, has a valve housing (1) equipped with a system for ensuring reliable valve closing using the back pressure of the container filling by means of a closure piston (2) which can move between open and closed positions. USE/ADVANTAGE - The valve is esp. screwed into a refrigerant bottle used for refrigerant topping up or refilling of refrigeration units after servicing or repair. It reliably prevents back-filling of the bottle with contaminated refrigerant from the refrigeration unit and always ensures a residual pressure remaining in the bottle.
Patent DE-4218449-A1 (DE)
Inventor: SCHWAB MICHAEL DIPL CHEM
IPC: D21H19/00
Filed: 1992-06-04
Abstract: A water-dilutable (water-thinnable) two-component coating composition containing   a) a polyisocyanate component comprising one or more organic polyisocyanates, and   b) a polyurethane resin prepared by     1. reacting     (A) polyisocyanates with   (B) polyols having a mean molecular weight Mn of at least 400,   (C) optionally low-molecular-weight polyols and (D) compounds containing at least two groups which are reactive towards isocyanate groups and at least one group which is capable of anion formation,  to give a prepolymer containing free NCO groups, and 2. reacting the prepolymer formed in step 1 with at least one of the components:   (E) low-molecular-weight polyols carrying no further groups which are reactive towards isocyanate groups, these compounds being employed in excess, (F) compounds which are monofunctional or contain active hydrogen of different reactivity and are different from (E), and optionally (G) compounds which are different from (B), (C), (D), (E) and (F) and contain at least two groups which are reactive with NCO groups.   r
Patent DE-4224822-A1 (DE)
Title: Inflatable vehicle airbag
Inventor: KAVANAGH CHRISTOPHER PAUL
IPC: B60R21/16
Filed: 1992-07-27
Abstract: The front part (20) and the rear part (22) of the airbag has a tear seam indicated generally at (24) comprising stitching of tortuous ladder pattern with "rings" (26) and "sides" (28).The pattern may be in the form of a sine wave or a square wave with combinations of different stitch lengths.